Question: Who is the student that coined the Euler-Lagrange equation?
Paraphrase: Who is the understudy that coined the Euler-Lagrange equation?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q875744 wdt:P61 ?X . ?X wdt:P802 ?answer}
Answer: Joseph-Louis Lagrange, Nicolas Fuss, Anders Johan Lexell, Johann Euler, Mikhail Evseyevich Golovin, Petr Inokhodtsev, Semen Kotelnikov, Stepan Rumovsky